16040205 has 12 divisors (see below), whose sum is σ = 27803100. Its totient is φ = 8554752.

The previous prime is 16040191. The next prime is 16040209. The reversal of 16040205 is 50204061.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 7502121 + 8538084 = 2739^2 + 2922^2 .

It is not a de Polignac number, because 16040205 - 2⁷ = 16040077 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16040209) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 178180 + ... + 178269.

It is an arithmetic number, because the mean of its divisors is an integer number (2316925).

Almost surely, 2^16040205 is an apocalyptic number.

16040205 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

16040205 is a deficient number, since it is larger than the sum of its proper divisors (11762895).

16040205 is a wasteful number, since it uses less digits than its factorization.

16040205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 356460 (or 356457 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 16040205 is about 4005.0224718471. The cubic root of 16040205 is about 252.1950964623.

Adding to 16040205 its reverse (50204061), we get a palindrome (66244266).

The spelling of 16040205 in words is "sixteen million, forty thousand, two hundred five".